Naoka ISE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A hair dye that is safe for human bodies and has a high hair dyeing effect is provided. The hair dye consisting of: a reaction solution (A) comprising: a substance having a specific flavonoid skeleton represented by the following general formula (1); one type or two or more types selected from benzyl alcohol, vanillin, propylene carbonate, and ?-butyrolactone; and one type or two or more types selected from a thioglycolic acid salt, a thiolactic acid salt, cysteine and cysteamine, and a reaction solution (B) comprising an oxidizing agent. (In the formula, R1, R2, R3, R4, R6, and R7 independently represent a hydrogen atom, a hydroxy group, or a methyl group; either one or both of R6 and R7 is/are a hydroxy group; R5 represents a hydrogen atom, a hydroxy group, a galloyl group, or a saccharide; and X represents >CH2, >C?O, or >CHOH.
Type:
Grant
Filed:
June 19, 2019
Date of Patent:
December 7, 2021
Assignee:
Shiseido Company, Ltd.
Inventors:
Daisuke Watanabe, Takanori Matsubara, Naoka Ise
Abstract: A hair dye that is safe for human bodies and has a high hair dyeing effect is provided. The hair dye consisting of: a reaction solution (A) comprising: a substance having a specific flavonoid skeleton represented by the following general formula (1); one type or two or more types selected from benzyl alcohol, vanillin, propylene carbonate, and ?-butyrolactone; and one type or two or more types selected from a thioglycolic acid salt, a thiolactic acid salt, cysteine and cysteamine, and a reaction solution (B) comprising an oxidizing agent. (In the formula, R1, R2, R3, R4, R6, and R7 independently represent a hydrogen atom, a hydroxy group, or a methyl group; either one or both of R6 and R7 is/are a hydroxy group; R5 represents a hydrogen atom, a hydroxy group, a galloyl group, or a saccharide; and X represents >CH2, >C?O, or >CHOH.
Type:
Application
Filed:
June 19, 2019
Publication date:
April 22, 2021
Applicant:
Shiseido Company, Ltd.
Inventors:
Daisuke WATANABE, Takanori MATSUBARA, Naoka ISE